Overview
The MAX222IDWR, produced by Texas Instruments, is a 5-V dual-channel RS-232 line driver/receiver. This device is designed to provide the electrical interface between an asynchronous communication controller and the serial-port connector. It features a dual charge-pump circuit that enables operation from a single 5-V supply and includes four small external capacitors. The MAX222IDWR meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards, ensuring reliable communication at data signaling rates up to 200 kbit/s.
Key Specifications
| Parameter | Value |
|---|---|
| Supply Voltage | 5 V |
| Data Signaling Rate | Up to 200 kbit/s |
| Driver Output Slew Rate | Maximum of 30-V/µs |
| ESD Protection | ±15-kV Human-Body Model |
| Package Type | SOIC (DW) with 18 pins |
| Operating Temperature Range | -40°C to 85°C |
| Supply Current in Shutdown Mode | 2 µA Typical |
| External Capacitors | 4 × 0.1 µF |
| Latch-Up Performance | Exceeds 100 mA Per JESD 78, Class II |
Key Features
- ESD Protection for RS-232 Bus Pins with ±15-kV Human-Body Model
- Meets or Exceeds the Requirements of TIA/EIA-232-F and ITU v.28 Standards
- Operates at 5-V Supply Voltage
- Supports Data Signaling Rates Up to 200 kbit/s
- Low Supply Current in Shutdown Mode (2 µA Typical)
- External Capacitors Required (4 × 0.1 µF)
- Latch-Up Performance Exceeds 100 mA Per JESD 78, Class II
- Dual Charge-Pump Circuit for Single 5-V Supply Operation
- Ability to Disable All Receivers Using SHDN
Applications
- Battery-Powered Systems
- PDAs (Personal Digital Assistants)
- Notebooks and Laptops
- Palmtop PCs
- Hand-Held Equipment
Q & A
- What is the maximum data signaling rate supported by the MAX222IDWR?
The MAX222IDWR supports data signaling rates up to 200 kbit/s.
- What type of ESD protection does the MAX222IDWR offer?
The MAX222IDWR offers ±15-kV ESD protection based on the Human-Body Model.
- What is the operating supply voltage for the MAX222IDWR?
The MAX222IDWR operates at a 5-V supply voltage.
- How many external capacitors are required for the MAX222IDWR?
The MAX222IDWR requires four external capacitors, each 0.1 µF.
- What is the typical supply current in shutdown mode for the MAX222IDWR?
The typical supply current in shutdown mode is 2 µA.
- What standards does the MAX222IDWR meet or exceed?
The MAX222IDWR meets or exceeds the requirements of TIA/EIA-232-F and ITU v.28 standards.
- What is the package type and pin count of the MAX222IDWR?
The MAX222IDWR is packaged in an SOIC (DW) package with 18 pins.
- What is the operating temperature range of the MAX222IDWR?
The operating temperature range is -40°C to 85°C.
- Can the receivers of the MAX222IDWR be disabled?
- What is the latch-up performance of the MAX222IDWR?
The latch-up performance exceeds 100 mA per JESD 78, Class II.
